Sitefinity Upgrade from 6 to 9.1 Warning and Stalling Upgrad

I am trying to upgrade from Sitefinity version 6 to 9.1. 

Locally, the upgrade worked flawlessly. When I push the upgraded site server side is where I start to see issues.

1. The upgrade process is stalling. The upgradeTrace.log is not increasing in size.  (Screenshot attached) The gears are still spinning, but it's been 3 hours.

2. I received a warning. I'm not exactly sure what it means.

HandlingInstanceID: dac4cf28-6f93-4898-b4f7-10226cec66f6
 An exception of type 'System.ArgumentException' occurred and was caught.
 ------------------------------------------------------------------------
 08/31/2016 11:14:05
 Type : System.ArgumentException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
 Message : The specified URL is not valid: ~/Sitefinity/Email Campaigns/Campaigns
 Source : Telerik.Sitefinity
 Help link : 
 ParamName : 
 Data : System.Collections.ListDictionaryInternal
 TargetSite : Boolean AddPageNodeAdditionalUrl(Telerik.Sitefinity.Pages.Model.PageNode, System.Globalization.CultureInfo, System.String, Boolean)
 HResult : -2147024809
 Stack Trace : at Telerik.Sitefinity.Modules.Pages.PageManager.AddPageNodeAdditionalUrl(PageNode node, CultureInfo language, String urlString, Boolean redirect)
 at Telerik.Sitefinity.Modules.Pages.PageManager.AddCurrentPageNodeUrlAsAdditional(PageNode node, CultureInfo language, Boolean redirectToDefault)
 at Telerik.Sitefinity.Modules.Pages.PageManager.ChangeParent(PageNode childNode, PageNode newParent, Boolean storeCurrentUrlAsAdditional)
 at Telerik.Sitefinity.Modules.Newsletters.NewslettersModule.Upgrade_FixPagesStructure(SiteInitializer initializer)
 at Telerik.Sitefinity.Modules.Newsletters.NewslettersModule.Upgrade(SiteInitializer initializer, Version upgradeFrom)
 at Telerik.Sitefinity.Services.ModuleBase.Install(SiteInitializer initializer, Version upgradeFrom)
 at Telerik.Sitefinity.Services.SystemManager.InitializeModule(ModuleSettings settings, InstallContext installContext, ModuleVersion moduleVersion, Nullable`1 start, Boolean skipModuleRegistration)
 
 Additional Info:
 
 MachineName : CL-TOTAL-4WB01
 TimeStamp : 8/31/2016 4:14:05 PM
 FullName : Telerik.Sitefinity.Utilities, Version=9.1.6110.0, Culture=neutral, PublicKeyToken=b28c218413bdf563
 AppDomainName : /LM/W3SVC/251/ROOT-9-131171335689336500
 ThreadIdentity : 
 WindowsIdentity : NT AUTHORITY\NETWORK SERVICE
 Requested URL: <url>

-------------------------

Does anyone have any suggestions?

Thanks!